Purchased my usual size 57. The hat fits perfectly. I like to wear my hats down brim in the front and up in the back. The hat holds that position without constant adjustments. I have received many compliments. Today someone stopped me at the supermarket to inquire where I got the hat. I wrote Delmonico Hatter and Mayser on his deli meat wrapper with a Sharpie. This is a great summer hat and I recommend it without reservation.